Carbon, absorption

The impact of the regulations in Table 4 is to require users and producers of VOC ketones to limit release by either reformulating to new solvent systems, to install environmental control systems which recover and recycle solvents, or reduce emissions with carbon absorption beds or incineration equipment. The use of some individual ketones will decline further, but the overall short-term use of ketones is forecast to remain stable (10). 

B. W. Lykins and M. Giiese, Chlorine Dioxide Disinfection and Granular Activated Carbon Absorption, EPA Project Summaiy, EPA-600/S2-82-051, Washington, D.C., May 1983. 

A. Reife, "Waste Treatment of Soluble Azo Acid, Direct and Reactive Dyes Using a Sodium Hydrosulfite Pretreatment Eodowed by Carbon Absorption," MATCC Book of Papers, 1990 International Conference and Exhibition, Philadelphia, Pa., Oct. 1—3,1990. 

Use dry SO, removal systems such as carbon absorption for sinter plants or lime spraying in flue gases. 

Efficient separation or pretreatment in the influent streams can include activated carbon absorption to reduce or prevent such problems. Principal applications of electrodialysis include ... 

Carbon atoms bonded to electron-withdrawing -OH groups are deshielded and absorb at a lower field in the 1,it NMR spectrum than do typical alkane carbons. Most alcohol carbon absorptions tall in the range 50 to 80 S, as the following data illustrate for cyclohexanol ... 

The overall reaction between CO2 and GMA was assumed to consist of two elementary reactions such as a reversible reaction of GMA and catalyst to form an intermediate and an irreversible reaction of this intermediate and carbon dioxide to form five-membered cyclic carbonate. Absorption data for CO2 in the solution at 101.3 N/m were interpreted to obtain pseudo-first-order reaction rate constant, which was used to obtain the elementary reaction rate constants. The effects of the solubility parameter of solvent on lc2/k and IC3 were explained using the solvent polarity. 

Carburizing One of several thermochemical treatments involving, by heating, carbon absorption from suitable material in contact with the surface layer, and diffusion into solid (ferrous) alloys. Surface hardening processes may then be... 

Concurrent stream of the development of nanomaterials for solid-state hydrogen storage comes from century-old studies of porous materials for absorption of gasses, among them porous carbon phases, better known as activated carbon. Absorption of gases in those materials follows different principles from just discussed absorption in metals. Instead of chemisorption of gas into the crystalline structure of metals, it undergoes physisorption on crystalline surfaces and in the porous structure formed by crystals. The gases have also been known to be phy-sisorbed on fine carbon fibers. 

Figure 7. Pesticide removal curves for the bench-scale recirculatory carbon absorption system.

Air strippers are ex situ devices used to physically transfer volatile organic contaminants (VOCs) from groundwater, surface water, or wastewater to air. Contaminants are not destroyed by air stripping, but once they are transferred to the airstream, they may be destroyed by oxidation or incineration, or removed using activated carbon absorption. 

In 1995, the U.S. EPA estimated costs for liquid-phase carbon adsorption and vapor-phase carbon absorption (D16494X, p. 99). This information is presented in Table 1. 

Yb(COs)i.o6(OH)o.88 I.7H2O and Lu(COs)i.is(OH)o.74 I.5H2O. The infrared spectrum of La2(COs)3 8H2O differs from those of other normal carbonates with two molecules of water of crystallization. The infrared spectra of the basic carbonates differ from the normal carbonates and may contain OH and MOH vibrations in addition to the water and carbonate absorption bands. 

Chen J.M. Liu J. Leblanc S.G. Lacaze R. and Roujean J.-L. (2003). Multi-angular optical remote sensing for assessing vegetation structure and carbon absorption. Remote Sensing of Environment, 84(4), 516 - 525. 

In the steam-reforming process (Fig. 1), the hydrocarbon feedstock is first desulfurized by heating to 370°C in the presence of a metallic oxide catalyst that converts the organosulfur compounds to hydrogen sulfide. Elemental sulfur can also be removed with activated carbon absorption. A caustic soda scrubber removes the hydrogen sulfide by salt formation in the basic aqueous solution. 

Element Subboiling Quartz Still, Doubly Distilled-Water Feed Doubly Distilled in Quartz, Distilled Water Feed" Deionized, Monobed, Polyethylene Apparatus, Distilled-Water Feed" Distilled Two-Stage Commercial Metal Still, City Water Feed," Recirculating Ultrapure System, Metal" Single-Pass Deionization of Tap Water" Deionization, Carbon Absorption, Deionization, Membrane Filtration ... 

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